<div *ngFor="let flow of flowPicture let i= index">
  <button  (dblclick)="change(i)" [class.editing]="flow.editing">{{flow.name}}<i class="fa fa-window-close" (click)="deleteNode(i)"></i><i class="fa fa-plus-square-o" (click)="addNode(i)"></i></button>
  <input [class.editor]="flow.editor" [(ngModel)]="flow.name" (blur)="recover(i)" >
</div>
